Revision To Guideline For Reusable Parts Is Available
Usage:
A revision to the Guideline for Reusable Parts, Valves and Valve Springs, is available. The new form number is SEBF8002-01. There have been several additions and changes made in the new guideline. They are:
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- 1. A 40% increase in the number of photographs of worn valves and springs.
- 2. Recommendations for additional methods to clean valves and valve stems.
- 3. Many small marks or scratches on the valve stem and valve head are now permitted.
- 4. Discoloration (change in color from normal) on valve stems is permitted if valves are cleaned and there is no discoloration in the retainer groove area before cleaning.
- 5. Light rust on valve stems and fillets is permitted if it can be removed by cleaning and there are no pits under the rust.
- 6. A recommendation that the 6V87 Valve Stem Gauge be used to measure valve stem diameters. This is a "Use Again, Do Not Use Again" gauge.
- 7. More "cupping" of valve heads is permitted. The earlier specification was too limited.
- 1. A 40% increase in the number of photographs of worn valves and springs.
In addition, the specifications for valves and valve springs are now in a separate Guideline For Reusable Parts, Form SEBF8034, which is also available.
Caterpillar Information System:
1979/03/14 List Of Service Publications
1979/03/14 Larger Diameter Washer Is Used To Hold Air Transfer Pipe In Aftercooler Flange
1979/03/14 Maintenance Procedures For Extended FPTO Life On 3408 And 3412 Marine Engines
1979/03/14 Main Bearings Now Have Larger Diameter Oil Hole For Better Lubrication Of Main And Rod Bearings
1979/03/14 8L4525 Flange Is Available Again For Parts Service Of 3192 Marine Transmissions
1979/03/14 Improvements Made To Fuel Injection Pump And Governor Group
1979/03/14 New Engine Cylinder Block Used
1979/03/14 New Fuel Injection Nozzles Are Used In 3208 Engines
1979/03/14 New Piston And Connecting Rod Are Tapered In Area Of Piston Pin
1979/03/14 New Oil Filter And Filter Base Assemblies
1979/03/07 New Exhaust Pipe Connector Makes A Tighter Seal Between Pipe And Manifold
1979/03/07 Retroreflective Tape Makes Phototach Kit Easier To Read
1979/03/14 Information About The Use Of Earlier Cylinder Heads And Liners With Spacer Plate Cylinder Blocks; List Of Earlier Articles
1979/03/14 Replacement Bushing Available For Cast Iron Rocker Arms Only
1979/04/04 New Fabricated Tools Available For Service Work On 7211 And 7221 Marine Transmissions
1979/04/04 New Oil Jet Tube In Cylinder Block Gives More Clearance For Pistons And Connecting Rods
1979/04/04 Four Crankshaft Rear Seals Are Available For Use On 3304 And 3306 Engines
1979/04/04 List Of Service Publications
1979/04/04 New Woodward Governor Control Used On Diesel Engines; Former Control Now Used On Gas Engines Only
1979/04/04 Improved Fuel Priming Pumps Give Longer Service Life
1979/04/04 Fabricated Air-To-Water Aftercooler Available For Dynamometer Testing Of Engines Equipped With Air-To-Air Aftercoolers
1979/04/04 A Reverse Connection Of Oil Filter Hoses Can Cause Bearing Failures
1979/04/04 New Pistons And Timing Advance Unit Give Better Emissions Control And Easier Starts
1979/04/25 6V112 Repair Kit Available For Parts Service Of The 8H8558 Nut Spinner